Sonic the Hedgehog 4: Episode 2 not coming to WiiWare?

Sonic the Hedgehog 4: Episode 1 made it out for WiiWare over a year ago, but it doesn’t sound like the sequel will arrive on Nintendo’s current home console. Episode 2 was officially announced today, but SEGA made no mention of a Wii version. Digital Brand Manager Ken Balough told GameSpot that the game will be released for the PlayStation 3, Xbox 360, Android, Windows Mobile 7 phone, and iOS devices.

Despite WiiWare’s file size limitations, Episode 1 ended up on the Wii Shop Channel without any issues. Balough did say that the new title will make use of a new graphics engine. Could that be the reason why there won’t be a WiiWare version?